Why waste a airsoft gun?
My UTG shotgun can't get 10 feet with nerf darts, how the hell do you get 100 feet?
Is it a Mauri?
Usually UTG fire 6mm bb's. The air chamber that usually fires those 6mm bb's are just too small to get distances above 50 feet. I used a launcher that fires 10mm paintballs. These launchers have a comparable air chamber to that of night finders. With some treaks, its not that hard to get 130+feet.
And for the other question. No I don't take it out side. I had to go out 1 AM when no one was outside, to test fire this. Ebay cancelled my listing twice because they thought it looked too real. I actually had to de-modify some parts, like the priming handle. I used the priming mech from an broken airsoft AK47 originally, to make it look less real ;-). So to answere the other question. I modify Airsoft rifles for fun and doing so I kinda had some left over Airsoft parts lying around.